Himalayan Salt contains 84 naturally occurring minerals including iron, magnesium, potassium, and calcium. Heated salt stones allow these and many other minerals to penetrate deep into muscles and joints. Himalayan salt stones have also been known o relive stress and anxiety, improve blood pressure, help reduce insomnia, and it neutralizes the positively charged radiation and balances the body's electromagnetic field. As an added benefit, salt stones also provide a gentle exfoliation to the skin during the massage. Oil must be used for this massage.